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Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Published on: June 16, 2011

tRNA modifications in viral replication.

Chathuri Pathirage¹, Kristin S Koutmou¹, Karin Musier-Forsyth²

¹Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA.

The Journal of Biological Chemistry

|April 9, 2026

Summary

This summary is machine-generated.

Viral infections alter transfer RNA (tRNA) modifications, impacting gene expression and viral replication. Understanding these tRNA changes is crucial for developing antiviral strategies.

Keywords:

RNA modification anti-viral immune response codon usage reverse transcription tRNA-derived RNA (tDR)tRNA-like structures (TLS)tRNA-modifying enzymes transfer RNA (tRNA)translation regulation viral replication

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Determining 3'-Termini and Sequences of Nascent Single-Stranded Viral DNA Molecules during HIV-1 Reverse Transcription in Infected Cells

Determining 3'-Termini and Sequences of Nascent Single-Stranded Viral DNA Molecules during HIV-1 Reverse Transcription in Infected Cells

Published on: January 30, 2019

Area of Science:

Molecular Biology
Virology
Genetics

Background:

Transfer RNAs (tRNAs) and their modifications are critical for gene expression, especially under stress conditions like viral infection.
Viral infections can significantly alter host cell tRNA pools and modification patterns, influencing both host and viral processes.
These alterations can affect viral protein production, reverse transcription, and innate antiviral responses.

Purpose of the Study:

To explore the multifaceted roles of tRNA modifications during viral infections.
To highlight how changes in tRNA modifications can reprogram host and viral proteomes.
To emphasize the need for global tRNAome analysis to understand viral-host interactions.

Main Methods:

Review of existing literature on tRNA modifications in viral infections.
Analysis of mechanisms by which tRNA modifications influence viral replication and host defense.
Discussion of emerging technologies for tRNAome analysis, including direct tRNA sequencing and mass spectrometry.

Main Results:

tRNA modifications are involved in programmed ribosomal frameshifting for viral protein synthesis.
Host tRNAs are used as primers for retroviral reverse transcription, with modifications potentially regulating this process.
Viruses can manipulate tRNA modification enzymes, and some modified tRNAs are packaged into virions.
tRNA modifications play a role in antiviral defense, such as through the generation of tRNA-derived fragments.

Conclusions:

Host tRNA modifications are significantly altered during viral infections, impacting multiple stages of the viral life cycle.
Further global tRNAome analyses are necessary to fully elucidate the functional implications of these modifications.
Emerging technologies offer promising avenues for comprehensive tRNA modification profiling in the context of viral infections.